Device for emptying containers



y 1935- A. DEMMLER ET AL DEVICE FOR EMPTYING CONTAINERS Filed June 12, 1954 2 Sheets-Sheet 1 r ml.

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DEV1CE FOR EMPTYING CONTAINERS Filed June 12, 1934 2 Sheets-Sheet 2 Fig. 9

9 TTOE/VEYS Patented July 30,1935

. UNITED STATES v 2,009,392 DEVICE ron EMPTYING commas Arno Demmler, Reichenbach in Vogtland, and Walter Greppert, Brandenburg, Germany, as-' signers to Otto Billian, Zurich, Switzerland Application June 12, 1934, Serial No. 730,228

In Germany 7 Claims.

Our invention relates to a device for emptying containers, such as tins, jars, or the like, for milk, oil, fruit juice, or any other liquid.

It is an object of our invention to provide a device of the type referred to in which dripping,

soiling of tables and other articles, and the formation of liquid residues on the containers themselves, are eliminated. Residues are particularly undesirable because they attract flies and other insects which contaminate them.

With the object of our invention in mind, we provide a bracket which is adapted to be placed on a container, for instance, by means of lugs at opposite ends of the bracket, and on this bracket we provide an outflow pipe, with means such as a punch which is mounted to slide in the pipe, for forming a liquid-outlet hole in the container so that the liquid, when the punch is retracted and lays open outlet hole, flows out through the hole and the pipe. the bracket, means such as a screw with a pointed and slotted end, which screw is inserted in a threaded hole of one of the lugs and serves for holding the bracket on the container and for forming an air-inlet hole in the container. Air is drawn into the container through the air-inlet hole as the liquid flows out, the slotted end of the screw serving as the air duct. The admission of air is cut off by screwing in the screw until the outer end of the slot is within the container.

In the accompanying drawings, devices embodying our invention are illustrated by way of example.

In the drawings:

Fig. 1 is a partly sectional elevation of a device with an undivided bracket,

Fig. 2 is a section on the line II-II in Fig. 1, drawn to a larger scale,

Fig. 3 is a plan view of Fig. 1,

Fig. 4 is a partly sectional elevation of a divided bracket,

Fig. 5 is a sectional elevation of a movable lug on the bracket, in which lug the screw for forming the air-inlet hole is inserted,

Fig. 6 is a partly sectional elevation showing a lug as in Fig. 5, equipped with a handle,

Fig. '7 is a modification of the lug and handle illustrated in Fig. 6, in which the handle is made of elastic material,

Fig. 8 is an elevation of a device with a handle at one end of its undivided bracket, showing the 4 device in position on a container which is partly broken open,

Fig. 9 is a partly sectional elevation of a device We further provide, also on June 13, 1933 whose outflow pipe has a spring catch for the punch, I

Fig. 10 is a partly sectional elevation of a device with an elongated handle on its pointed screw, and

Fig. 11 is a partly sectional elevation of a device whose outflow pipe is secured to a lug on the bracket, and not arranged on top of the bracket, as in the other modifications which have been illustrated.

Referring now to thelfdrawings, and first to the device illustrated in Figs, 1, 2, and 3, the bracket I of this device is undivided and is equipped with :1 lug 2 at one of its ends, and with a lug 3 at the other end, so that the bracket resembles the letter U, inverted. In this position, the bracket I is placed on a container, here shown as a tin 4, so that the lug 2 at the left engages the sideof the tin, or rather the downturned flange at the top of its lid I2. The inner face of lug 2 is preferably curved to a radius substantially equal to the radius of the tin 4, to give the lug a better seat on the flange of the lid.

The other lug 3 is preferably straight, as it is spaced apart from the lug 3 for such a distance that it does not engage the flange of the tin when the lug 2 has been applied to the flange.

A screw 5 is inserted in a threaded hole of the other lug 3. The inner end of the screw 5 is pointed at 6 for piercing the wall of the tin 4 and has a slot or groove I for admitting air to the intcrior of the tin through the pointed end.

The screw 5, consequently, has three functions: Firstly, it holds the bracket on the tin, secondly, it forms the air-inlet hole in the side of the tin, and thirdly it supplies the interior of the tin with air through the air-inlet hole.

An outflow pipe 9 for the liquid, with a branch pipe II) at one side of the main pipe, is inserted in the bracket I so that its lower end projects from the lower face of the bracket, and a sealing ring I I, of rubber or the like, is placed on the projecting lower end of the outflow pipe 9 between the bracket I and the lid I2 of the tin 4.

A punch I3 is mounted to slide in the outflow pipe 9 with a cylindrical collar I4. A recess is formed by the upper face of collar I4 and the lower face of a collar I5 which is only partly cylindrical, or crescent-shaped, as best seen in Fig. 2. The two collars are connected by a push rod I6, and a. check I'I, here shown as a screw with a slotted end, is inserted in the wall of pipe 9 so as to engage in the recess between the two collars I4 and I5 when the collar I5 is in the position of Fig. 1. A spring I8 is placed on the rod [6, with its lower end bearing on the collar l5, and its upper end supported by a cap 99 at the upper end of pipe 9. The upper end of rod I6 projects from the upper end of pipe 9 and is equipped with a handle or knob IQ for shifting and turning the rod.

Inoperation, the bracket I is placed-on the tin 4 as shown, and the handle 8 at the outer end of the screw is turned so as to drive its inner or pointed end 6 into the side wall of the tin 4. When the side wall'has been pierced by the point 6, air is admitted to the container through slot 1. The handle or knob IS on the push rod I6 is now turned until the collar l 5 clears the check ll,

1 and the rod is depressed until the punch l3 has pierced the lid I2 of the tin 4 to form the liquidoutlet hole therein. The spring I8 holds the punch in the hole it has formed. When it is desired to empty the container or to tap a portion of the liquid from it, the rod l6'is raised until the collar I5 is above the check H, in which position, as shown in Fig. l; the collar I4 of the punch I3 exposes the inner opening of the branch pipe to,

and the rod is then turned so that the collar I5 is suspended on the check ll. When the tin is in-: verted, liquid flows out through the punched outlet hole in the lid, and the pipes 9, 10, while air is admitted through the slot 1 of screw 5.

If only a portion of the liquid is to betapped, the rod I6 is again turned until the collar l5 clears the check I1, whereupon the spring 18 returns the punch 03 to the position in which it closes the hole it has made. The screw 5 is now turned inwardly until the outer end of its slot 1 iswithin the container and the access of atmospheric air to the container is interrupted. When'it is desired to tap more liquid from the tin, or toempty it, the screw 5 is withdrawn until its slot 1 admits atmospheric air, and the rod l 6 is raised and suspended by its collar l5 as described.

It will be understood that the operation of our device for emptying or tapping containers is clean and without waste, and that no residues of liquid are left on the tin after tapping or emptying.

In order to adapt the bracket to tins or other containers of substantially different diameters, the means illustrated in Figs. 4 to 7 may be used.

Referring first to Fig. 4, the bracket is sub-' divided into a part 20, with the outflow pipe 9, and the lug 2', and a part 2|, with the lug 3'. The part 2| has equidistant threaded holes 22 and the part 20 has a locating member 23 which engages in one of the holes 22, according to the relative position of the parts 20 and 2|. A screw 24, with a handle 25, is inserted in one of the threaded holes 22 through a plain hole in the part 20 for connecting the two parts. In order to vary the span of the lugs 2 and 3', the screw 24 is unscrewed from the hole 22 in which it had been, the parts are shifted as required, and the screw is re-inserted.

The lug in which the screw 5 is mounted, may be an independent member, and mounted to be displaced on the bracket I. Such a lug is shown in Fig. 5, where the lug 25 has a hole for sliding on the plain end of bracket I. The other end of the bracket has the lug 2', as described. Edges 21 and 28 are formed in the hole of the lug for engaging the upper and lower faces of the bracket I, and fixing the lug onthe bracket, when the screw 5 is set.

Referring to Fig. 6, the lug 26' is equipped with a handle 29 which has the shape of an inverted "L, with a short horizontal upper portionj and a longer vertical lower portion. Where the two portions merge into each other, the handle has a hole 30 for the free passage of a bracket ,whose end is plain here, while the other end has a lug similar to the lug 2.

The handle may be elastic, as shown in Fig. 7. Here, the lug 26" has only the lower edge 28', and another edge 3| is formed in the hole 30', for engaging the bracket from below. The reaction of the elastic handle 29 forces the edges 28' and 3| against the face of the bracket from below, holding the lug 26" on the bracket.

Referring now to Fig. 8, the lug 3" at the right of the bracket I" is elongated in downward direction, and equipped with a handle 32. When the screw 5' has been driven home the bracket I" and the tin 4' are rigidly connectedand the handle 32 serves for manipulating the tin, for instance, for placing it on a stand 33. Obviously, such a handle may also be provided on the divided bracket illustrated in Fig. 4.

The outflow pipe 9 and its branch pipe l0- may be cast as a. single member, as shown in Fig. 8, with a rib 34 connecting the two pipes.

A cast member facilitates the provision of a spring catch for the push rod l6, as shown in Fig. 9. A ball 35 is inserted in a bore 36 of the member and urged into grooves 31 and 38 of the rod by a spring 39 in the bore 36.

The screw 5' may be equipped with a flange 40 and alsealing washer 4| at its pointed end, as shown in Figs. 8 and 9. Obviously, the outer end of slot 1' must extend beyond the outer face of flange 40, as shown in Fig. 9.

Fig. 10 shows a long'handle 42 on the screw 5" which performs the same function as the handle 32 in Fig. 8, and in addition serves for pushing home the screw 5" by rotation of the handle 42.

As shown in Fig. "11, an outflow pipe 43 may be inserted in the lug -2" and equipped with the sealing ring! I', like the outflow pipe. The outer end of the pipe 43 has a female thread 44 to be engaged by a male thread 45 on the rod l6", for piercing the side wall of the tin with the point or punch [3' at the inner end of the rod.

It is understood that the pipe 43 may be arranged on any bracket, and not only on a bracket or the type shown in Fig. 5, as illustrated by way of example in Fig. 11.

We claim: v

1. In a device for emptying containers, a bracket adapted to be placed on a container, an outflow pipe on said bracket, a punch mounted to slide in said outflow pipe for punching a liquid-inlet hole in the container, means for holding said punch in the liquid-inlet hole, means for keeping said punch in a position, against the action of said holding means, in which it exposes the liquid-outlet hole, and means on said bracket for holding the bracket on the container and for forming an air-inlet hole in the container.

2. In a device for emptying containers, a bracket adapted to be placed on a container, an outflow pipe on said bracket, a punch mounted to slide in said outflow pipe for punching a liquidoutlet hole in the container, means for holding said punch in the liquid-outlet hole, means for keeping said punch in a position, against the action of said holding means, in which it exposes the liquid-outlet hole, a branch pipe connected to said outflow pipe at a point beyond which said punch is moved by the operation of said keeping means, and means on said bracket for holding the bracket on the container and for forming an air-inlet hole in the container.

3. In a device for emptying containers, a bracket adapted to be placed on a container, an outflow pipe on said bracket, a punch mounted to slide and to turn in said outflow pipe for punching a liquid-outlet hole in the container, means for holding said punch in the liquid-outlet hole, a collar on said punch which is partly cut away, and a check on said outflow pipe adapted to cooperate with said collar: for keeping said punch in a position, against the action of said holding means, in which it exposes the liquid-outlet hole, means for turning said punch to disengage its collar from the check, and means on said bracket for holding the bracket on the container and for forming an air-inlet hole in the container.

4. In a device for emptying containers, a bracket adapted to be placed on a container, an outflow pipe on said bracket, a punch mounted to slide and to turn in said outflow pipe for punching a liquid-outlet hole in the container, a spring for holding said punch in the liquid-outlet hole, a collar on said punch which is partly cut away, and a check on said outflow pipe adapted to cooperate with said collar: for keeping said punch in a position, against the action of said spring, in which it exposes the liquid-outlet hole, means for turnin said punch to disengage its collar from the check, and means on said bracket for holding the bracket on the container and for forming an air-inlet hole in the container.

5. In a device for emptying containers, a bracket adapted to be placed on a container, a fixed lug at one end of said bracket, a movable lug having an opening with which it is mounted to slide on the other end of said bracket, an edge in said opening adapted to engage said bracket, an outflow pipe on said bracket, means in said outflow pipe for forming a liquid-outlet hole in the container, and means on said movable luz for: holding the bracket on the container, fixing the movable ing on the bracket by causing said edge to bite into the bracket, and forming an air-inlet hole in the container.

6. In a device for emptying containers, a bracket adapted to be placed on a container, a fixed lug at one end 01 said bracket, a movable lug having an opening with which it is mounted to slide on the other end of said bracket, an edge in said opening adapted to engage said bracket, an elastic handle on said movable lug having an opening with which it is mounted to slide on the other end of the bracket together with the movable lug, an edge in the opening of said handle also adapted to engage said bracket, said movable lug and said handle being so arranged with respect to each other that the reaction of the handle causes the two edges to bite into the bracket, an outflow pipe on said bracket, means in said outflow pipe for forming a liquid-outlet hole in the container, and means on said movable lug for holding the bracket on the container and for forming an air-inlet hole in the container.

7. In a device for emptying containers, a bracket adapted to be placed on a container, an outflow pipe on said bracket, means in said outflow pipe for forming a liquid-outlet hole in the container, a spring catch in said pipe for holding said means in two distinct positions, and means on said bracket for holding the bracket on the container and for forming an air-inlet hole in the container.

ARNO DEMMLER. WALTER GREPPERT. 

